US5254473A - Solid state device for monitoring integral values of time and temperature of storage of perishables - Google Patents
Solid state device for monitoring integral values of time and temperature of storage of perishables Download PDFInfo
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- US5254473A US5254473A US07/494,572 US49457290A US5254473A US 5254473 A US5254473 A US 5254473A US 49457290 A US49457290 A US 49457290A US 5254473 A US5254473 A US 5254473A
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- 229910002027 silica gel Inorganic materials 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- QERXHBDEEFLTOL-UHFFFAOYSA-M sodium 1-[[4-[(4-sulfophenyl)diazenyl]phenyl]diazenyl]naphthalen-2-olate Chemical compound [Na+].Oc1ccc2ccccc2c1N=Nc1ccc(cc1)N=Nc1ccc(cc1)S([O-])(=O)=O QERXHBDEEFLTOL-UHFFFAOYSA-M 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 229910001467 sodium calcium phosphate Inorganic materials 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- AYQGOOLZDOHXAY-UHFFFAOYSA-M sodium;3-[[4-[(2-chlorophenyl)-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]-2-methylcyclohexa-2,5-dien-1-ylidene]methyl]-n-ethyl-3-methylanilino]methyl]benzenesulfonate Chemical compound [Na+].C=1C=C(\C(=C\2C(=CC(C=C/2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C)C=2C(=CC=CC=2)Cl)C(C)=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 AYQGOOLZDOHXAY-UHFFFAOYSA-M 0.000 description 1
- FJBHGWADYLMEJG-UHFFFAOYSA-M sodium;3-[[4-[[4-(diethylamino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]-n-ethylanilino]methyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C=CC(=CC=1)N(CC)CC=1C=C(C=CC=1)S([O-])(=O)=O)=C(C=C1)C=CC1=[N+](CC)CC1=CC=CC(S([O-])(=O)=O)=C1 FJBHGWADYLMEJG-UHFFFAOYSA-M 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- YFDSDPIBEUFTMI-UHFFFAOYSA-N tribromoethanol Chemical compound OCC(Br)(Br)Br YFDSDPIBEUFTMI-UHFFFAOYSA-N 0.000 description 1
- 229950004616 tribromoethanol Drugs 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- KRVRUAYUNOQMOV-UHFFFAOYSA-N tris(4-aminophenyl)methanol Chemical compound C1=CC(N)=CC=C1C(O)(C=1C=CC(N)=CC=1)C1=CC=C(N)C=C1 KRVRUAYUNOQMOV-UHFFFAOYSA-N 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229960005486 vaccine Drugs 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
- PEAGNRWWSMMRPZ-UHFFFAOYSA-L woodstain scarlet Chemical compound [Na+].[Na+].OC1=CC=C2C=C(S([O-])(=O)=O)C=C(S([O-])(=O)=O)C2=C1N=NC(C=C1)=CC=C1N=NC1=CC=CC=C1 PEAGNRWWSMMRPZ-UHFFFAOYSA-L 0.000 description 1
- ORZHVTYKPFFVMG-UHFFFAOYSA-N xylenol orange Chemical compound OC(=O)CN(CC(O)=O)CC1=C(O)C(C)=CC(C2(C3=CC=CC=C3S(=O)(=O)O2)C=2C=C(CN(CC(O)=O)CC(O)=O)C(O)=C(C)C=2)=C1 ORZHVTYKPFFVMG-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/229—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating time/temperature history
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
- G01K3/04—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values in respect of time
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
In k=A-E.sub.act /RT
______________________________________ Color Change Name of Dye Original Final ______________________________________ Methyl Red Yellow Red Chrome Azurol S Yellow Red Rosalic Acid Red Yellow Brillant Yellow Red Yellow Eriochrome Black T Blue-Green Red Bromocresol Purple Violet Yellow Xylenol Orange Purple Yellow Neutral Red Yellow Red Dichloroindophenol Blue Red Acid Blue 113 Blue Green Malachite Green Colorless Green Parosaniline Base Colorless Red Paraosaniline Chloride Colorless Red Brilliant Blue G Yellow Green Pentamethoxytriphenyl Colorless Yellow MeOH Tetrabromophenolphth Colorless Yellow alein Victoria Blue B Light Red Light Blue ______________________________________
TABLE 1 ______________________________________ Color change of time-temperature indicating devices made from cellulose acetate butyrate, pH dye and dodecylamine. Original Color after Annealing Name of Dye Color RT (21 day) 60° C. (8 hour) ______________________________________ Brilliant Green Colorless Green Green Methyl Green Colorless Violet Violet Acid Fuschin Colorless Magenta Magenta Alkali Blue 6B Colorless Blue Blue Chlorophenol Red Purple Colorless Colorless a-Naphtholbenzein Blue-Green Ash Yellow Thymol Blue Green Yellow Yellow Gallocyanine Colorless Violet Blue ______________________________________
______________________________________ Cellulose nitrate (SS1/4 2 ml, 20% in 2-butanone (MEK) obtained from Hercules, Inc) = Malachite green base = 0.25 ml, 5% in MEK Dodecylamine = 1.0 ml, 30% in MEK Camphor (plasticizer) = 0.14 g ______________________________________
TABLE 2 ______________________________________ Time required for color change for cellulose nitrate- dodecylamine system. Temp (° C.) t1/2 (min) ______________________________________ 40 23.0 50 10.5 60 3.4 70 0.9 80 0.6 92 0.17 ______________________________________
______________________________________ Polyvinylchloride = 5.0 ml, 4% in Tetrahydrofuran (THF) Malachite green base = 0.5 ml, 5% in MEK Dodecylamine = 1.0 ml, 30% in MEK ______________________________________
TABLE 3 ______________________________________ Time required for color change for polyvinylchloride- dodecylamine system. Temp (° C.) t1/2 (min) ______________________________________ 39.5 39.0 49.4 10.0 59.1 2.75 68.5 0.675 ______________________________________
______________________________________ Polyvinylchloride = 5.0 ml, 6% in MEK Malachite green base = 0.5 ml, 4% in MEK Rosalic acid = 0.5 ml, 4% in MEK plus dodecylamine to dissolve the dye Dodecylamine = Varied from 0.2 to 2.0 ml, 20% in MEK Additives (e.g. 0.25-2 ml, 9% solution in chloroform polycaprolactone) = ______________________________________
______________________________________ Polyvinylchloride = 2.0 ml, 6% in MEK Malachite green base = 0.5 ml, 4% inMEK Tetrabutylammonium 1 to 10 drops of 26% in methanol Hydroxide (TBAH) = ______________________________________
TABLE 4 ______________________________________ Effect of Concentration of Tetrabutylammonium hydroxide Concentration of Color at Time to become TBAH in film RT after dark green at 60° C. (% w/w) six hours (Minutes) ______________________________________ 4 Colorless light green after 6hours 8 Pale yellow Green after 6 hours 12 Light yellow 300 16 Pale green 55 20 Light green 13 24 Green 10 28 Green 7 32Green 5 ______________________________________
Claims (29)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/494,572 US5254473A (en) | 1990-03-16 | 1990-03-16 | Solid state device for monitoring integral values of time and temperature of storage of perishables |
PCT/US1992/010287 WO1994012858A1 (en) | 1990-03-16 | 1992-11-30 | Solid state device for monitoring integral values of time and temperature of storage of perishables |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/494,572 US5254473A (en) | 1990-03-16 | 1990-03-16 | Solid state device for monitoring integral values of time and temperature of storage of perishables |
PCT/US1992/010287 WO1994012858A1 (en) | 1990-03-16 | 1992-11-30 | Solid state device for monitoring integral values of time and temperature of storage of perishables |
Publications (1)
Publication Number | Publication Date |
---|---|
US5254473A true US5254473A (en) | 1993-10-19 |
Family
ID=26785201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/494,572 Expired - Fee Related US5254473A (en) | 1990-03-16 | 1990-03-16 | Solid state device for monitoring integral values of time and temperature of storage of perishables |
Country Status (2)
Country | Link |
---|---|
US (1) | US5254473A (en) |
WO (1) | WO1994012858A1 (en) |
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